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The C Users' Group Library 1994 August
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wc-cdrom-cusersgrouplibrary-1994-08.iso
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v_10_10
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1010052a
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1992-08-12
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101 lines
/* Listing 5 */
#include <stdio.h>
#define TEST
#include "Listing 3"
static int c;
int getLength(void);
/* target function */
int complexDecision(int a, int b)
{
if (((a > b) && (a < getLength())) || (a == 15))
c = a + b;
else
c = 0;
return c;
}
/******** begin test code **********/
#if defined( TEST )
static int length;
struct testParameters
{
int a; /* input parameter */
int b; /* input parameter */
int length; /* function call return */
int returnValue; /* target return value */
char *errorMsg; /* message if error detected */
};
#define MAX 32767 /* 16 bit integer boundary */
struct testParameters testCase[] =
{
{ 1, 0,MAX, 1,"a > b and a < length" },
{ 0, 0,MAX, 0,"a = b and a < length" },
{ -1, 0,MAX, 0,"a < b and a < length" },
{ -1, -1,MAX, 0, "a and b = -1 and a < length" },
{MAX, 0,MAX, 0, "a > b and a = length" },
{ 0, 0, 0, 0, "a, b and length = 0" },
{ -1, -1, -1, 0, "a, b and length = -1" },
{MAX,MAX,MAX, 0, "a, b, and length = MAX" },
{ 15, 15,MAX, 30, "a = b, a < length and a = 15" },
{15,MAX,MAX,-32754,"a < b, a < length and a = 15" },
{15,MAX,MAX,-32754,"a = b, a < length and a = 15" },
{ 15, 14, 14, 29, "a > b, a > length and a = 15" },
{ 15, 0, 15, 15, "a > b, a = length and a = 15" },
{ 15, -1,MAX, 14, "a > b, a < length and a = 15" },
{ 15, 1, 16, 16, "a > b, a < length and a = 15" }
};
/* function to test the complexDecision() function */
int testDecision(void)
{
int i;
int result;
/* macro to print header and initialize error
counter */
StartTest("complexDecision()");
/* loop through test cases */
for(i = 0; i < 15; i++)
{
/* set dummy function return value */
length = testCase[i].length;
/* call the target function */
result = complexDecision(testCase[i].a,
testCase[i].b);
/* check for correct return value */
if(result != testCase[i].returnValue)
ErrorMsg(i, testCase[i].errorMsg);
/* verify correct side effect */
if(result != c)
ErrorMsg(i, "c is incorrect");
}
/* macro to print results and return error count */
EndTest;
}
main()
{
testDecision();
}
/* dummy function */
int getLength( void )
{
return length;
}
#endif